Strong interband Faraday rotation in 3D topological insulator Bi2Se3

L. Ohnoutek; M. Hakl; M. Veis; B. A. Piot; C. Faugeras; G. Martinez; M. V. Yakushev; R. W. Martin; C. Drasar; A. Materna; G. Strzelecka; A. Hruban; M. Potemski; M. Orlita

doi:10.1038/srep19087

Strong interband Faraday rotation in 3D topological insulator Bi2Se3

L. Ohnoutek, M. Hakl, M. Veis, B. A. Piot, C. Faugeras, G. Martinez, M. V. Yakushev, R. W. Martin, C. Drasar, A. Materna, G. Strzelecka, A. Hruban, M. Potemski, M. Orlita

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Abstract

The Faraday effect is a representative magneto-optical phenomenon, resulting from the transfer of angular momentum between interacting light and matter in which time-reversal symmetry has been broken by an externally applied magnetic field. Here we report on the Faraday rotation induced in the prominent 3D topological insulator Bi2Se3 due to bulk interband excitations. The origin of this non-resonant effect, extraordinarily strong among other non-magnetic materials, is traced back to the specific Dirac-type Hamiltonian for Bi2Se3, which implies that electrons and holes in this material closely resemble relativistic particles with a non-zero rest mass.

Original language	English
Article number	19087
Number of pages	9
Journal	Scientific Reports
Volume	6
DOIs	https://doi.org/10.1038/srep19087
Publication status	Published - 11 Jan 2016

Keywords

Faraday rotation
3D topological insulator
Bi3Se3
time reversal symmetry

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10.1038/srep19087Licence: CC BY 4.0

Ohnoutek-etal-SR-2015-Strong-interband-Faraday-rotation-in-3D-topological-insulatorFinal published version, 759 KBLicence: CC BY 4.0

http://www.nature.com/articles/srep19087

Robert Martin
- r.w.martin@strath.ac.uk
- Physics - Professor
- SUPA
- Measurement Science and Enabling Technologies
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title = "Strong interband Faraday rotation in 3D topological insulator Bi2Se3",

abstract = "The Faraday effect is a representative magneto-optical phenomenon, resulting from the transfer of angular momentum between interacting light and matter in which time-reversal symmetry has been broken by an externally applied magnetic field. Here we report on the Faraday rotation induced in the prominent 3D topological insulator Bi2Se3 due to bulk interband excitations. The origin of this non-resonant effect, extraordinarily strong among other non-magnetic materials, is traced back to the specific Dirac-type Hamiltonian for Bi2Se3, which implies that electrons and holes in this material closely resemble relativistic particles with a non-zero rest mass.",

keywords = "Faraday rotation, 3D topological insulator, Bi3Se3, time reversal symmetry",

author = "L. Ohnoutek and M. Hakl and M. Veis and Piot, {B. A.} and C. Faugeras and G. Martinez and Yakushev, {M. V.} and Martin, {R. W.} and C. Drasar and A. Materna and G. Strzelecka and A. Hruban and M. Potemski and M. Orlita",

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doi = "10.1038/srep19087",

language = "English",

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T1 - Strong interband Faraday rotation in 3D topological insulator Bi2Se3

AU - Ohnoutek, L.

AU - Hakl, M.

AU - Veis, M.

AU - Piot, B. A.

AU - Faugeras, C.

AU - Martinez, G.

AU - Yakushev, M. V.

AU - Martin, R. W.

AU - Drasar, C.

AU - Materna, A.

AU - Strzelecka, G.

AU - Hruban, A.

AU - Potemski, M.

AU - Orlita, M.

PY - 2016/1/11

Y1 - 2016/1/11

N2 - The Faraday effect is a representative magneto-optical phenomenon, resulting from the transfer of angular momentum between interacting light and matter in which time-reversal symmetry has been broken by an externally applied magnetic field. Here we report on the Faraday rotation induced in the prominent 3D topological insulator Bi2Se3 due to bulk interband excitations. The origin of this non-resonant effect, extraordinarily strong among other non-magnetic materials, is traced back to the specific Dirac-type Hamiltonian for Bi2Se3, which implies that electrons and holes in this material closely resemble relativistic particles with a non-zero rest mass.

AB - The Faraday effect is a representative magneto-optical phenomenon, resulting from the transfer of angular momentum between interacting light and matter in which time-reversal symmetry has been broken by an externally applied magnetic field. Here we report on the Faraday rotation induced in the prominent 3D topological insulator Bi2Se3 due to bulk interband excitations. The origin of this non-resonant effect, extraordinarily strong among other non-magnetic materials, is traced back to the specific Dirac-type Hamiltonian for Bi2Se3, which implies that electrons and holes in this material closely resemble relativistic particles with a non-zero rest mass.

KW - Faraday rotation

KW - 3D topological insulator

KW - Bi3Se3

KW - time reversal symmetry

UR - http://www.nature.com/articles/srep19087

U2 - 10.1038/srep19087

DO - 10.1038/srep19087

M3 - Article

VL - 6

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 19087

ER -

Strong interband Faraday rotation in 3D topological insulator Bi2Se3

Abstract

Keywords

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Robert Martin

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